Called. I didn't answer the call. No message left. I called the number back from a phone they wouldn't be able to identify and received the recording that I've reached Customer Service Management, saying I was probably responding to a call I had received. I could press 1 to speak to a representative, 2 to be added to their Do Not Call List or 3 to leave a message. (Number 2 tells me it's a sales call). I pressed 1 to try to get the company name, but after the phone rang a few times I was prompted to leave a message. I hung up. Blocking the number.